Portal Frame Steel Structure Warehouse Construction With Modern Insulation Panel
This portal frame steel structure warehouse features modern insulation panels and is designed for processing sandwich panels. The three-span structure includes one 5T overhead crane per span, with a main steel frame consisting of welded H-shaped steel beams and columns. Roof and wall panels are constructed with rock wool sandwich panels.
Portal frame steel structures are widely used for:
- Large warehouses and factories
- Workshops and industrial sheds
- Garages and hangars
- Office buildings and bridges
- Stadiums and other large structures
Our specialized engineering department has established a comprehensive design system that ensures structural reliability while optimizing material selection and combination. This results in buildings that are not only safe and economical but also architecturally refined.
Specification of Steel Structure Materials
| Item name | Specification | Material Parameter | Technical Treatment |
| Column | H shape, Box, steel pipe, Hot rolled sheet | Q235B, Q345B | Paint or Hot dip galvanized |
| Beam | H shape, steel Truss, Hot rolled sheet | Q235B, Q345B | Paint or Hot dip galvanized |
| Bracing | Steel rod, Steel pipe, Angle steel | Q235B, Q345B | |
| Purling | C or Z shape, purling Thickness:1.8mm~3.0mm | Q235B, Q346B | Hot dip galvanized |
| Wall and roof panel | EPS, Rock wool, Pu, Glass wool Sandwich panel or Single sheet | Steel T=0.426~0.8mm, insulation T=50~150mm | Alu-zinc 150g, Fluorocarbon paint |
| Door | Sliding or rolling door | Steel or Aluminum sheet, T=1.0~1.5mm | Paint or Hot dip galvanized |
| Window | alloy-Glass, Aluminium alloy-shutter | T=1.0~2.0mm | Alloy |
| Lighting panel | FRP, T=1.5mm or T=1.8mm | Coefficient of thermal expansion:2.2x10-5/cm/cm/℃ | Light transmittance 85% |
| Ventilator | Turbine ventilator, and electric type | Steel, stainless steel, PC | Paint or Hot dip galvanized, 304 |
| Gutter | Galvanized or stainless steel plate | T=2.0mm | Hot dip galvanized, 304 |
| Downpipe | PVC pipe, Color steel pipe T=0.5mm | Φ110, 160, 200 | Paint |
| Bolt | Ordinary, high strength | 10.9S, 4.8s | Hot dip galvanized |
| Anchor bolt | Steel rod M24, M27 M30 | Q235B | |
Our Steel Structure Factory
Quality Control for Steel Structure Fabrication
QC/Technical Support
- Raw material quality control
- Thickness tolerance <0.25mm
- Yield and tension strength testing in-house
- Third party inspection certificate
- Supply traceable mill certificate
Structural steel fabrication quality control
- 100% testing dimension tolerance <1mm
- 20% sample welding line ultrasonic testing, no fault, full penetration
- 20% magnetic powder testing, no bubble, no defect, Smooth and Full
- Supply third-party inspection assistance
Shot blasting and painting quality control
- Shot blasting grade Sa. 2.5 Metal luster, no rust, no oil dirt, no welding spatter
- Roughness >75um
- Paint primer within 5 hours after shot blasting
- Holiday-free coatings, smooth, No dust
- Dry Film Thickness (DFT) >75UM
Pre-assembly testing the connection details.
Packing & Loading
All structural components, panels, bolts, and accessories are packed in standard packages suitable for ocean transportation and loaded into 40'HQ containers. Our skilled workers use cranes and forklifts at our factory loading site to ensure products are loaded without damage.
